Terra-company type dermatosisL85.0

Author:Prof. Dr. med. Peter Altmeyer

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Last updated on: 15.09.2022

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Synonym(s)

Dermatosis neglecta; Duncan`s dirty dermatosis; Terra firma-form dermatosis

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HistoryThis section has been translated automatically.

Duncan, Chen, Knox, 1987

DefinitionThis section has been translated automatically.

Term for sternal or retroauricular localized, non-symptomatic, blurred, dirty-brown, adherent, hyperkeratotic, flat (also large-area) harmless (plaques) deposits of the skin, which cannot be removed with the usual washing procedures.

EtiopathogenesisThis section has been translated automatically.

Probably this clinical picture is based on a mild cornification disorder that was previously little noticed.

LocalizationThis section has been translated automatically.

Sternal region, retroauricular,

HistologyThis section has been translated automatically.

Acanthosis with papillomatosis and lamellar hyperkeratosis. Occasional detection of PAS-positive yeast spores.

DiagnosisThis section has been translated automatically.

Probatory rubbing test with an alcohol-soaked swab. By rubbing vigorously several times, the deposits can be removed completely without difficulty.

Differential diagnosisThis section has been translated automatically.

Acanthosis nigricans, Papillomatosis confluens et reticularis, Dermatosis neglecta (identical clinical picture), Pityriasis versicolor

External therapyThis section has been translated automatically.

Wipe off with alcohol, e.g. 70 % isopropyl alcohol.

LiteratureThis section has been translated automatically.

  1. Duncan WC, Chen YES, Knox JM (1987) Terra firma-forme dermatosis. Arch Dermatol 123:567-569
  2. Pallure V et al (2014) Terra firma-forme dermatosis. Ann Dermatol Venereol 140:693-698
  3. Lora V et al (2013) Terra firma-forme dermatosis. J Cutan path 41):141-143
  4. Berk DR (2012) Acanthosis nigricans of the ears or terra firma-forme dermatosis? Ann Dermatol 24: 218-219
  5. Berk DR (2012). Scalp discoloration from selenium sulphide: revisiting a report of terra firma-forme dermatosis of the scalp. Br J Dermatol 166:1374.
  6. Dalton SR et al (2011) The histopathology of terra firma-forme dermatosis. J Cutan Pathol 38:537-539

Authors

Last updated on: 15.09.2022

Author: Prof. Dr. med. Peter Altmeyer